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SAW ADJUSTING DEVICE.

Patented Apr. 6, 1897.

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UNITED STATES PATENT OEEICE.

VILLIAM D. HERSCHEL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO J OSEPII O. COLLADAY, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent N o. 580,130, dated April 6, 1897.

Application filed September 3, 1896. Serial No. 604,704. (No model.)

To @ZZ whom t may concern: S designates an apron or extension attached Be it known that I, IVILLIAM D. HERSOHEL, to said boxes N and P, whereby the same are a citizen of the United States, residing in the caused to move in unison, said apron being city and county of Philadelphia,State of Penncarried by the limb E and having passed 55 5 Sylvania, have invented a new and useful Imthrough it the bolt T, on which is a tightenprovement in Saw-Adjusting Devices, which ing-nut, the latter being provided with the improvement is fully set forth in the followhandleUfor convenience of rotating the same. ing specification and accompanying draw- The portion of the bolt near its head occuings. pies the segmental slot V in the side of the 6o 1o My invention consists of a novel construcweb C and may be raised and lowered theretion of a saw-adjusting device whereby the in, whereby the position of the arm E relative saw or other analogous device employed can to the bed A can be varied by rotating the be adjusted with great nicety and exactness hand-wheel L to the desired extent. relatively to the bed of the machine, the de- The limbs E of the lever D, the lower half 65 15 tails of construction being hereinafter set of the box N, the apron S, and the lower half forth, and specifically pointed out in the of the box P are integral, and the web proclaims. vides a single support for the several con- Figure l represents a plan view of a sawnected parts, excepting the screw J and wheel adjusting device embodying my invention. or crank L, thus providing a strong, durable, 7o 2o Fig. 2 represents a side elevation thereof. and compact structure, there being a vast re- Fig. 3 represents a perspective view vof a deduction in the members of the device.

tached portion. The operation is as follows: lVhen it is de- Similar letters of reference indicate corresired to adjust the saw relative to the table, sponding parts in the several iigures. it is only necessary to loosen the handle U 75 2 5 Referring to the drawings, A designates the and to rotate the stem J in the direction debed of the machine, and B the uprights or sired, such rotation causing the link Gto adstandards therefor, the same being joined vance or retreat, thereby moving the boxes and braced by mea-ns of the upright web C. N and P, and consequently the shaft Q and D designates a bell-crank orelbow lever, the saw are raised or depressed thereby into 8o 3o which is pivoted at D to the web C and is the desired position, and when the same has provided with the limbs E and F. been reached by manipulating the handle U G designates a link which has one end pivthe parts can be locked, as is evident.

otally attached to the limb F, while its other Having thus described my invention, what end is formed into a stirrup I-I, which is en- I claim as new, and desire to secure by Letters 8 5 gaged by the screw of threaded stem J, which Patent', is-

is attached to the hand-wheel L, which latter l. In a saw-adjusting device, a web, an el is swiveled in boxes K, tted directly in the bow-lever mounted thereon, a box on said leadjacent standard in any suitable manner, ver, an apron, a box thereon, means for raisso that longitudinal movement oi' the stem J ing and lowering said lever, and an arbor 9o 4o is prevented when the same is rotated, wheremounted in said boxes with a pulley interby the link G is propelled either to the right mediate of the boxes, said lever, apron, and or to the left by reason of the engagement of one-half of each box being integral, said web the threaded stem J with said stirrup. havingthereinasegmental slot which receives M designates ways or recesses formed in the adjacent box, the center of said slot be- 95 45 the web C, in which the box N is adapted to ing the axis of said lever.

play. 2. A web provided with a recess in its up- P designates a box in alinexnent with the per edge, and a segmental slot in its side, an box N, in which the shaft Q rotates, the latelbow-lever mounted on said web, a box on ter carrying a saw Q' and being provided with the upper limb of said lever occupying said roo 5o the pulley R, to which the power may be aprecess, an apron connected at one end with plied, said box and extending laterally therefrom,

t l I Il I--f rup and the operating hand-Wheel L, the swivel-boxes of said stem being mounted di- 1o reotly in the adjacent upright B.

WILLIAM D. HERSCHEL.

lVituesses:

HOWARD S. COLLADAY, JOHN A. WIEDERSHEIM. 

